Fix Error Driver for USB 2.0-serial drivers - Arduino

 This Problem is:

QA:

Hi to all at arduino

just wondering if any one can help.
i have an uno r3 and a nano pro.
the uno works great no probs, connects, uploads. really happy with it.

but when i plug the nano in to xp sp2 pc via usb, it finds new hardware but wont install the drivers. i cant find these usb 2.0-serial drivers anywhere. iv tried re-installing the ftdi drivers from arduino site but the comm port still does not show up in the ide and i still have usb 2.0-serial flagged up in device manager.

again, if any ones got the answer please help.

many thanks

 

Answer:

Just download this driver CH341SER  on file ZIP on this then UNZIP then do like this

1.  Open device manager

2.  Righth clik Other devices -> USB2.0 Ser   --> update driver

3. Click update driver---> find folder (driver CH341SER)

4. Find driver foler for USB2.0

5. Finis, succes to install, OK

Now your PC ready connect to USB arduino

 

 

Audio Player dengan Arduino

Hardware Required

• Arduino Due Board
• 8-ohm speaker or headphones
• Arduino shield with an SD card with cs CS 4 (like the Ethernet shield)

Komponen tambahan untuk bagian audio amplifier:

• LM386 (low power audio amplifier)
• 10 kohm potentiometer
• 10 ohm resistor
• 2 x 10 µF capacitor
• 0.05 µF (or 0.1 µF) capacitor
• 250 µF capacitor 

Skema

File Audio File

File audio disimpam di SD card format file .wav  misal diberi nama (test .wav) frek sampling 44100 Hz, 16-bit stereo quality.

Code Program:

/*
  Simple Audio Player

 Demonstrates the use of the Audio library for the Arduino Due

 Hardware required :
 * Arduino shield with a SD card on CS4
 * A sound file named "test.wav" in the root directory of the SD card
 * An audio amplifier to connect to the DAC0 and ground
 * A speaker to connect to the audio amplifier

 Original by Massimo Banzi September 20, 2012
 Modified by Scott Fitzgerald October 19, 2012
 Modified by Arturo Guadalupi December 18, 2015

 This example code is in the public domain

 http://www.arduino.cc/en/Tutorial/SimpleAudioPlayer

*/

#include <SD.h>
#include <SPI.h>
#include <Audio.h>

void setup() {
  // debug output at 9600 baud
  Serial.begin(9600);

  // setup SD-card
  Serial.print("Initializing SD card...");
  if (!SD.begin(4)) {
    Serial.println(" failed!");
    while(true);
  }
  Serial.println(" done.");
  // hi-speed SPI transfers

  // 44100kHz stereo => 88200 sample rate
  // 100 mSec of prebuffering.
  Audio.begin(88200, 100);
}

void loop() {
  int count = 0;

  // open wave file from sdcard
  File myFile = SD.open("test.wav");
  if (!myFile) {
    // if the file didn't open, print an error and stop
    Serial.println("error opening test.wav");
    while (true);
  }

  const int S = 1024; // Number of samples to read in block
  short buffer[S];

  Serial.print("Playing");
  // until the file is not finished
  while (myFile.available()) {
    // read from the file into buffer
    myFile.read(buffer, sizeof(buffer));

    // Prepare samples
    int volume = 1024;
    Audio.prepare(buffer, S, volume);
    // Feed samples to audio
    Audio.write(buffer, S);

    // Every 100 block print a '.'
    count++;
    if (count == 100) {
      Serial.print(".");
      count = 0;
    }
  }
  myFile.close();

  Serial.println("End of file. Thank you for listening!");
  while (true) ;
}

Menggerakkan Servo Motor dengan Setting Potensiometer

Hardware Required

• Arduino or Genuino Board
• Servo Motor
• 10k ohm potentiometer
• hook-up wires 

Skema

CODE:

/*
 Controlling a servo position using a potentiometer (variable resistor)
 by Michal Rinott <http://people.interaction-ivrea.it/m.rinott>

 modified on 8 Nov 2013
 by Scott Fitzgerald
 http://www.arduino.cc/en/Tutorial/Knob
*/

#include <Servo.h>

Servo myservo;  // create servo object to control a servo

int potpin = 0;  // analog pin used to connect the potentiometer
int val;    // variable to read the value from the analog pin

void setup() {
  myservo.attach(9);  // attaches the servo on pin 9 to the servo object
}

void loop() {
  val = analogRead(potpin);            // reads the value of the potentiometer (value between 0 and 1023)
  val = map(val, 0, 1023, 0, 180);     // scale it to use it with the servo (value between 0 and 180)
  myservo.write(val);                  // sets the servo position according to the scaled value
  delay(15);                           // waits for the servo to get there
}